Read Sony AVD-K700P / HT-V700DP Service Manual online
10
AVD-K700P
2-2. ELECTRICAL TROUBLESHOOTING GUIDE
1. Power(SMPS) CIRCUIT
NO 5.3VA.
Replace the F101.
(Use the same Fuse)
Is the F101 normal?
Is the TH101
normal?
normal?
Is the BD101
normal?
normal?
NO
NO
NO
NO
NO
NO
Replace the
BD101.
BD101.
Replace the TH101.
Is the D105
normal?
normal?
Check or Replace
the D105.
the D105.
Replace the D129.
Replace the IC106.
YES
YES
YES
YES
YES
YES
YES
Is Vcc(8.5~21V) sup-
plied to IC104 Pin3?
plied to IC104 Pin3?
NO
Is the D129
normal?
normal?
Is there about 2.5V
at the IC106 Vref?
at the IC106 Vref?
Check the Main PCB
5.3VA/5.0V Line short?
5.3VA/5.0V Line short?
(1) No 5.3VA (SYS/Hi-Fi/TUNER)
NO 12VA.
Check or Replace
the D126.
the D126.
Is the Vcc(13V) supplied
to (+) terminal in D126?
to (+) terminal in D126?
Check or Replace
the Motor Vcc.
the Motor Vcc.
NO
YES
YES
(2) No 12VA (TO CAP, DRUM MOTOR)
NO 5.0VA.
5.3VA Line Check.
Is 5.3VA put into
the Q167 Emitter?
the Q167 Emitter?
Is about 5V put into
the Q167 Base?
the Q167 Base?
Is the Q169 Base
“H”?
“H”?
NO
NO
Check the Power
Control.
Control.
NO
Check or Replace the
Q169, R175, R176, R177.
Q169, R175, R176, R177.
YES
YES
YES
Check or Replace
the Q167/Q169.
the Q167/Q169.
YES
(3) No 5.0V (SYS/Hi-Fi/TUNER)
Click on the first or last page to see other AVD-K700P / HT-V700DP service manuals if exist.